CVE-2014-0979

    Dashboard / Vulnerabilities / CVE-2014-0979

    CVE-2014-0979

    Published: 23 Jan 2014Last Modified: 16 Apr 2026

    Summary:

    Details: The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username.

    References: http://secunia.com/advisories/56211, http://secunia.com/advisories/56423, https://bugzilla.novell.com/show_bug.cgi?id=857303, http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html, http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html, http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html, http://www.openwall.com/lists/oss-security/2014/01/07/15, http://www.securityfocus.com/bid/64679, https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High